Question

The value of universal gas constant is 8.3 J/mole/K, the mean kinetic energy of 32 gm of oxygen at –73ºC will be-

• A. 480 J
• B. 4980 J
• C. 2490 J
• D. The information is incomplete

Answer 1

Answer: (C)

2490 J

Answer 2

K.E./mole of O₂

= $\frac{3}{2}$RT = 2490J